Putnam County GIS Maps
Putnam County, New York, has 97,668 residents across 42,291 parcels and covers 230.3 square miles. The population declined 2% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Putnam County is 36079.
Brewster is the county's largest population center. Putnam County also includes 9 zip codes, 10 public school districts and 19 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
Putnam County Trends
- Population
- 97,668▾
- Median Home Value
- $448,000▴
- K-12 Enrollment
- 30,403▾
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Putnam County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Putnam County Parcels
Putnam County has 42,291 mapped parcels. The median assessed value is $422,300. The median lot size is 0.94 acres. 2,107 parcels are 10 acres or larger. Of the parcels with a recorded build year, half were built in 1968 or earlier. The records carry 35,799 distinct owner names. About 3% of parcels list an owner mailing address outside New York. Owner names, site addresses, assessed values and lot sizes are on nearly every parcel. Mailing addresses reach 95.8%. Browse the interactive Putnam County Parcel viewer here.
Putnam County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 42,291 | 100% |
| Owner name | 42,215 | 99.8% |
| Owner mailing address | 40,514 | 95.8% |
| Site address | 42,290 | 99.9% |
| Land use code | 42,216 | 99.8% |
| Land use description | 1,736 | 4.1% |
| Assessed value | 42,216 | 99.8% |
| Land value | 42,216 | 99.8% |
| Improvement value | 0 | 0% |
| Acreage | 42,216 | 99.8% |
| Parcel boundary | 42,291 | 100% |
| Download all Putnam County parcels. | ||
Field coverage measured across all Putnam County parcel records.
Putnam County Population
Putnam County had 97,668 residents in 2020. That was 2% lower than in 2010. Putnam County added 1,923 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 424 people per square mile. Some of the county's most populated postal areas include Mahopac, Carmel and Brewster.
Population Trend in Putnam County NY
Putnam County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Putnam County Zip Codes
Putnam County has 9 zip codes. Some of the county's most populated zip codes include Mahopac (10541), Carmel (10512) and Brewster (10509). Mahopac is the largest zip by population, with about 25,651 residents or 26% of the county total. Together, the three largest zips account for about 71% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Putnam County NY
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 10541 | Mahopac | 25,651 | ▾ -2.6% |
| 10512 | Carmel | 24,664 | ▾ -3.6% |
| 10509 | Brewster | 19,501 | ▾ 0% |
| 10579 | Putnam Valley | 8,633 | ▾ -0.5% |
| 12563 | Patterson | 7,586 | ▾ -6.2% |
| Download all zip code data | |||
Putnam County Zip Code populations and trends per most recent census data.
Putnam County Demographics
Putnam County has a median age of 44.2, which makes the county a little older than New York overall. About 19.6% of residents are under 18, while 18.7% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 30.3% of the population, which points to a solid working-age base. About 43.5% of adults have a bachelor's degree or higher, above the statewide figure of 39.6%. The county is majority White by population, with Hispanic, Asian, Black and multiracial residents making up a meaningful share of the local mix.
Key Demographics for Putnam County NY
Median Age
44.2
Under 18
19.6%
Age 65+
18.7%
Bachelor's+
43.5%
Putnam County School Districts
Putnam County is served by 10 public school districts with 30,403 students enrolled in 2024. The largest districts on the county map are Wappingers Central, Lakeland Central and Mahopac Central. Those three districts account for about 63% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in Putnam County NY
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Wappingers Central School District | 10,199 | 33.5% | ▾ -1.2% |
| Lakeland Central School District | 5,232 | 17.2% | ▾ -2.9% |
| Mahopac Central School District | 3,836 | 12.6% | ▾ -0.7% |
| Carmel Central School District | 3,651 | 12% | ▾ -0.8% |
| Brewster Central School District | 2,988 | 9.8% | ▴ 1.2% |
| Download all school district data | |||
Putnam County school district enrollment and trends per most recent NCES reporting data.
Putnam County Housing & Real Estate
Putnam County has a median home value of $448,000 and a median gross rent of $1,824. About 83% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the New York median, while rents come in above the state average. In March 2026, the median listing price was $600,000 and homes spent about 46 days on the market.
Putnam County Housing Mix
Putnam County housing mix: owner, renter and vacant units.
Putnam County Housing Trends
Putnam County median home value and rent trend (last 5 years).
Businesses in Putnam County, NY
Putnam County has 3,754 business listings across 621 categories. The largest categories in Putnam County business listings are Contractors (74, 2.0%), Gas Stations (68, 1.8%), and Community & Nonprofits (62, 1.7%). The full Putnam County business listings dataset includes names, categories, addresses and contact details where available. Putnam County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Putnam County, NY
| Category | Businesses | Share |
|---|---|---|
| Contractors | 74 | 2.0% |
| Gas Stations | 68 | 1.8% |
| Community & Nonprofits | 62 | 1.7% |
| Auto Repair | 59 | 1.6% |
| Hair Salons | 54 | 1.4% |
| Parks & Recreation | 51 | 1.4% |
| Building Supply Store | 47 | 1.3% |
| Real Estate Agents | 44 | 1.2% |
| Churches & Religious Organizations | 44 | 1.2% |
| Lake | 42 | 1.1% |
Putnam County Business Listings
| Business | Category | City |
|---|---|---|
| Arms Acres | Abuse And Addiction Treatment | Carmel |
| Bobo’s Cafe | Acai Bowls | Baldwin Place |
| The Garrison | Accommodation | Garrison |
| Mary Ellen DeBonis CPA | Accountant | Patterson |
| West Branch Reservoir | Active Life | Carmel |
| On Point Acupuncture NY | Acupuncture | Carmel |
| Giggles | Adult Entertainment | Carmel |
| Scentisphere | Advertising Agency | Carmel |
| Tri-State Hay Farms | Agricultural Cooperatives | Patterson |
| Mahopac Airport | Airport | Mahopac |
| Download Putnam County business listings | ||
Putnam County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Putnam County Basemaps
Putnam County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Putnam County Data Package
This page shows a preview of what's included in the Putnam County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for parcels, zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Putnam County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.